The Air-Sea Interaction. Masanori Konda Kyoto University
|
|
- Felicity Bruce
- 5 years ago
- Views:
Transcription
1 2 The Air-Sea Interaction Masanori Konda Kyoto University
2 2.1 Feedback between Ocean and Atmosphere Heat and momentum exchange between the ocean and atmosphere Atmospheric circulation Condensation heat Convective activity Large scale circulation Heating Latent heat (Evaporation) Ocean winds Wind stress Sea surface temperature Cooling Change of the sea surface temperature by through the mixed layer processes Ekman transport Oceanic heat transport at various scales Wind-driven circulation Fig Schematic view of the interaction between ocean and atmosphere 12km The shortwave solar insolation provides the energy that drives the geophysical fluids including ocean and atmosphere. In the troposphere (which ranges from the Earth's surface to a height of 12km) where we live, radiation energy warms the ocean surface before transferring to the atmosphere through sensible heat and the latent heat of evaporation. This force drives atmospheric circulations at various scales. In turn, the wind drives ocean circulation. Wind and evaporative cooling at the sea surface affect the temperature in the ocean mixed layer, where the temperature and the salinity are almost uniform. This important feedback system plays a major role in maintaining the geophysical fluid motion through the exchange of energy between ocean and atmosphere. The calm global climate is attributable to meridional heat transport by oceanic and atmospheric circulation. The oceanic wind contributes to the mixed layer processes through the input of turbulent energy and also through the density flux caused by evaporative cooling. As a result, the feedback system starts again, heating the atmosphere by evaporation at the sea surface. 11
3 2.2 Interannual Variation of Sea Surface Temperature and Ocean Wind Mean Sea Surface Temperature in Dec [ C] The sea surface temperature (SST) and the wind field over the oceans are almost in a steady state due to the persistent air-sea global-interaction system. For example, SST is generally high at low latitudes, and low at middle and high latitudes. However, careful inspection of SST distribution demonstrates that some contours are not parallel to the latitude, such as in the northeast Pacific and the north Atlantic. This meridional inclination of the SST distribution should reflect to some extent the ocean currents. We see the highest SST in the Indonesian archipelago, known as the warm water pool, which is maintained by the Trade wind. In contrast, we also see a low SST along the equator in the eastern tropical Pacific known as the cold tongue. The map of the ocean wind in the figures demonstrates the typical distribution in the boreal winter. The high wind speed in the mid latitudes should reflect the marked stationary high and low pressures. The wind speed is low over the Indonesian archipelago and the other notable atmospheric convergence zones. Mean Sea Surface Wind in Dec [m/s] Land surface Data missing AMSR-E 12 Fig Global distribution of monthly averaged SST and wind speed in December as observed by AMSR-E
4 Mean Sea Surface Temperature in Dec [ C] Mean Sea Surface Wind in Dec On the other hand, air-sea interaction changes both the ocean and the atmosphere. One of the most notable large-scale variations of the SST is the El Niño, which cause the SST over the equatorial Pacific to change interannually. The close air-sea interaction plays an important role in this phenomenon. El Niño began developing in spring of, and reached its mature phase in winter. A comparison of SST in with those in 23, when El Niño did not occur, reveals a warmer SST in the eastern Pacific with a suppressed cold tongue and lower SST in the western Pacific in. Simultaneously, the region with low wind, representing the atmospheric convergence at the surface level, moved eastward in. This indicated a strong air-sea coupling, and it shifted both the anomalously high SST and the atmospheric convergence zone to the east [m/s] Land surface Data missing AMSR-E Fig Global distribution of monthly averaged SST and wind speed in December 23 as observed by AMSR-E 13
5 2.3 Large Heat Release over the Florida Current and the Gulf Stream 5W/m 2 1m 3 C ( a ) AMSR-E Sea Surface Temperature on Dec. 3, [ C] ( b ) AMSR-E Sea Surface Wind on Dec. 3, [m/s] The Florida Current is a strong western boundary current similar to the Kuroshio, and the Gulf Stream is its extension. The figure shows an area of extremely large latent heat flux just over the warm current. The rapid increase of evaporation over the warm SST is attributable to the nonlinear increase of water vapor capacity in the atmosphere, proportional to the temperature. A cooling of 5W/m 2 in latent heat flux would decrease the temperature of the ocean from the surface to a depth of 1m by 3 C in one month, indicating the magnitude of the thermal effect of the strong meridional flow. On the other hand, the strong temperature front and the strong wind prevailing in this region indicate that the warm water carried by the strong meridional current and the strong wind in the winter both contribute to the significant levels of latent heat flux. ( c ) AMSR-E Latent Heat Flux on Dec. 3, [W/m 2 ] Land surface Data missing AMSR-E a b c Fig Snapshots from AMSR-E on the east coast of America on December 3, 23 depicting (a) SST, (b) wind speed, and (c) latent heat flux
6 2.4 Gradual Increase of Evaporation in the East China Sea in Winter ( a ) AMSR-E Latent Heat Flux on Dec. 2, 23 ( b ) AMSR-E Sea Surface Temperature on Dec. 2, 23 ( c ) AMSR-E Sea Surface Wind on Dec. 2, 23 ( d ) AMSR-E Water Vapor Pressure on Dec. 2, [W/m 2 ] 8 19 [ C] 1 2 [m/s] [hpa] AMSR-E a b c d a QuikSCAT SeaWinds Fig Snapshots from AMSR-E in the East China Sea on December 2, 23 depicting (a) latent heat flux, (b) SST, (c) wind speed, and (d) water vapor pressure. Black arrows in (a) indicate wind vector in the same day observed by SeaWinds on QuikSCAT W/m 2 The strong blowout of the cold, dry atmosphere from the continent is a typical phenomenon in the winter near Japan, and it causes strong evaporation downstream. However, the dry atmosphere itself is not enough to cause active evaporation. Before it is able to cool the sea surface by evaporation, the cold, dry atmosphere must first be warmed by the sea surface, becoming a warm, dry atmosphere that can contain a large amount of water vapor. It is obvious from the December 2, 23 data that maximum evaporation occurs south of Kyushu, even though the strong blowout is prevailing over the East China Sea. The distribution of water vapor near the sea surface clearly demonstrates that the humidity of the atmosphere increases in proportion to the enhanced evaporation in the downstream winds.
Lecture 13 El Niño/La Niña Ocean-Atmosphere Interaction. Idealized 3-Cell Model of Wind Patterns on a Rotating Earth. Previous Lecture!
Lecture 13 El Niño/La Niña Ocean-Atmosphere Interaction Previous Lecture! Global Winds General Circulation of winds at the surface and aloft Polar Jet Stream Subtropical Jet Stream Monsoons 1 2 Radiation
More informationOcean Circulation. Si Hui Lee and Frances Wen. You can access ME at
Ocean Circulation Si Hui Lee and Frances Wen You can access ME at http://tinyurl.com/oceancirculation Earth - the blue planet - 71% area covered by the oceans - 3/4 of ocean area between 3000-6000m deep
More informationATS150: Global Climate Change. Oceans and Climate. Icebergs. Scott Denning CSU 1
The Oceans Wind-Driven Gyre Circulations Icebergs Scott Denning CSU 1 Surface Balance of Forces friction coriolis wind stress resultant current Wind stress accelerates surface water Friction couples surface
More informationGoal: Develop quantitative understanding of ENSO genesis, evolution, and impacts
The Delayed Oscillator Zebiak and Cane (1987) Model Other Theories Theory of ENSO teleconnections Goal: Develop quantitative understanding of ENSO genesis, evolution, and impacts The delayed oscillator
More informationReview for the second quarter. Mechanisms for cloud formation
Review for the second quarter Mechanisms for cloud formation 1 Rising air expands and cools; Sinking air compresses and warms. (18) (24) Dry adiabatic lapse rate (10 o C/km): the rate of temperature decrease
More information(20 points) 1. ENSO is a coupled climate phenomenon in the tropical Pacific that has both regional and global impacts.
SIO 210 Problem Set 4 Answer key December 1, 2014 Due Dec. 12, 2014 (20 points) 1. ENSO is a coupled climate phenomenon in the tropical Pacific that has both regional and global impacts. (2 points) a)
More informationRECTIFICATION OF THE MADDEN-JULIAN OSCILLATION INTO THE ENSO CYCLE
RECTIFICATION OF THE MADDEN-JULIAN OSCILLATION INTO THE ENSO CYCLE By William S. Kessler and Richard Kleeman Journal of Climate Vol.13, 1999 SWAP, May 2009, Split, Croatia Maristella Berta What does give
More informationMeteorology I Pre test for the Second Examination
Meteorology I Pre test for the Second Examination MULTIPLE CHOICE 1. A primary reason why land areas warm up more rapidly than water areas is that a) on land, all solar energy is absorbed in a shallow
More informationAgronomy 406 World Climates
Agronomy 406 World Climates January 30, 2018 Monsoons. Ocean properties and circulation. Review for today: Online textbook: 1.3.1 (Sea water) Composition and properties. For Thursday: Rahmstorf, S.: The
More informationWinds and Ocean Circulations
Winds and Ocean Circulations AT 351 Lab 5 February 20, 2008 Sea Surface Temperatures 1 Temperature Structure of the Ocean Ocean Currents 2 What causes ocean circulation? The direction of most ocean currents
More informationLecture 24. El Nino Southern Oscillation (ENSO) Part 1
Lecture 24 El Nino Southern Oscillation (ENSO) Part 1 The most dominant phenomenon in the interannual variation of the tropical oceanatmosphere system is the El Nino Southern Oscillation (ENSO) over the
More informationLecture 18: El Niño. Atmosphere, Ocean, Climate Dynamics EESS 146B/246B
Lecture 18: El Niño Atmosphere, Ocean, Climate Dynamics EESS 146B/246B El Niño Transient equatorial motions: Kelvin and Rossby waves. Positive feedback mechanism associated with air-sea coupling. Atmospheric
More informationOCN 201 Surface Circulation
OCN 201 Surface Circulation Excess heat in equatorial regions requires redistribution toward the poles 1 In the Northern hemisphere, Coriolis force deflects movement to the right In the Southern hemisphere,
More informationApplied Earth Science Climate Exam Practice Questions Page 1
Name: 1. Which combination of climate factors generally results in the coldest temperatures? A) low elevation and low latitude B) low elevation and high latitude C) high elevation and low latitude D) high
More informationWater on Earth. How do oceans relate to weather and the atmosphere? Solar Radiation and Convection Currents
Earth is often called the Blue Planet because so much of its surface (about 71%) is covered by water. Of all the water on Earth, about 96.5% is held in the world s oceans. As you can imagine, these oceans
More informationSection 6. The Surface Circulation of the Ocean. What Do You See? Think About It. Investigate. Learning Outcomes
Chapter 5 Winds, Oceans, Weather, and Climate Section 6 The Surface Circulation of the Ocean What Do You See? Learning Outcomes In this section, you will Understand the general paths of surface ocean currents.
More informationIX. Upper Ocean Circulation
IX. Upper Ocean Circulation World Ocean Covers 71% of Earth s surface Contains 97% of surface water Arctic Ocean NH: 61% ocean, 39% land Pacific Ocean Atlantic Ocean Southern Ocean Indian Ocean SH: 81%
More informationChapter 10: Global Wind Systems
Chapter 10: Global Wind Systems Three-cell model of atmospheric circulation Intertropical Convergence Zone (ITCZ) Typical surface wind patterns Upper-level pressure and winds Climatological sea-level pressure
More informationAtmospheric & Ocean Circulation-
Atmospheric & Ocean Circulation- Overview: Atmosphere & Climate Atmospheric layers Heating at different latitudes Atmospheric convection cells (Hadley, Ferrel, Polar) Coriolis Force Generation of winds
More informationEvaluation of ACME coupled simulation Jack Reeves Eyre, Michael Brunke, and Xubin Zeng (PI) University of Arizona 4/19/3017
Evaluation of ACME coupled simulation Jack Reeves Eyre, Michael Brunke, and Xubin Zeng (PI) University of Arizona 4/19/3017 1. Introduction We look at surface variables in the tropical Pacific from a coupled
More informationVariability in the tropical oceans - Monitoring and prediction of El Niño and La Niña -
Variability in the tropical oceans - Monitoring and prediction of El Niño and La Niña - Jun ichi HIROSAWA Climate Prediction Division Japan Meteorological Agency SST anomaly in Nov. 1997 1 ( ) Outline
More informationOcean Currents that Redistribute Heat Globally
Ocean Currents that Redistribute Heat Globally Ocean Circulation Ocean Currents Fig. CO7 OCEAN CURRENTS Surface ocean currents are similar to wind patterns: 1. Driven by Coriolis forces 2. Driven by winds
More informationATMS 310 Tropical Dynamics
ATMS 310 Tropical Dynamics Introduction Throughout the semester we have focused on mid-latitude dynamics. This is not to say that the dynamics of other parts of the world, such as the tropics, are any
More informationChapter 9: Circulation of the Ocean
Chapter 9: Circulation of the Ocean Tropical gardens on Britain s Scilly Isles. Only 48 kilometers (30 miles) off the coast of Cornwall at 50 N, these scenic islands lie in the path of the warm waters
More information1 2 http://ds.data.jma.go.jp/tcc/tcc/index.html http://ds.data.jma.go.jp/tcc/tcc/index.html Climate in Japan World Climate Extratropics Tropics Oceanograhpic conditions World Climate Page 2 Extratropics
More information3/22/11. General Circulation of the Atmosphere. General Circulation of the Atmosphere
Chapter 10 General refers to the average air flow, actual winds will vary considerably. Average conditions help identify driving forces. The basic cause of the general circulation is unequal heating of
More informationLecture 14. Heat lows and the TCZ
Lecture 14 Heat lows and the TCZ ITCZ/TCZ and heat lows While the ITCZ/TCZ is associated with a trough at low levels, it must be noted that a low pressure at the surface and cyclonic vorticity at 850 hpa
More informationAssessment Schedule 2016 Earth and Space Science: Demonstrate understanding of processes in the ocean system (91413)
NCEA Level 3 Earth & Space Science (91413) 2016 page 1 of 6 Assessment Schedule 2016 Earth and Space Science: Demonstrate processes in the ocean system (91413) Evidence Statement Q Evidence with with Excellence
More information5. El Niño Southern Oscillation
5. El Niño Southern Oscillation Copyright 2006 Emily Shuckburgh, University of Cambridge. Not to be quoted or reproduced without permission. EFS 5/1 Ocean-Atmosphere Coupling Tropical atmosphere/ocean,
More informationAtmosphere & Weather. Earth Science
Atmosphere & Weather Earth Science Energy Transfer in the Atmosphere Earth s energy is provided by the SUN! Energy is important to us because it 1. Drives winds and ocean currents. 2. Allows plants to
More informationLecture 15 General Circulation of the Atmosphere and Ocean
Lecture 15 General Circulation of the Atmosphere and Ocean Non-rotating model of atmospheric general circulation Hadley (1735) Cell is induced by uneven distribution of solar heating. Conceptual models
More information10% water in the world is tied up in the surface ocean currents. (above the pycnocline) Primary source is wind: Westerlies, Trades, Polar Easterlies
Oceanography Chapter 9 10% water in the world is tied up in the surface ocean currents. (above the pycnocline) Primary source is wind: Westerlies, Trades, Polar Easterlies Coriolis deflects winds (and
More informationAtmosphere Circulation
Atmosphere Circulation Winds What Causes Winds? Difference in air pressure due to unequal heating of the atmosphere. Temperatures vary according to the amount of sun it gets. Uneven heating of the Earth
More informationESS15 Lecture 12. Review, tropical oceans & El Nino, and the thermohaline ocean circulation. Please see new reading material on website.
ESS15 Lecture 12 Review, tropical oceans & El Nino, and the thermohaline ocean circulation. Please see new reading material on website. Review. I-clicker exercise: In this graph of Earth s energy imbalances
More informationWind Driven Circulation Indian Ocean and Southern Ocean
Wind Driven Circulation Indian Ocean and Southern Ocean Lecture 18 MAR 350 Spring 2017 Reading: Knauss Chapter 7 ECCO2 model animation ecco2_sst_flow (2).mp4 Mean surface height and currents DPO Fig. 11.1
More informationCHAPTER 7 Ocean Circulation
1 2 3 4 5 6 7 8 9 10 11 12 13 14 CHAPTER 7 Ocean Circulation Words Ocean currents Moving seawater Surface ocean currents Transfer heat from warmer to cooler areas Similar to pattern of major wind belts
More informationChapter 6: Atmospheric Pressure, Wind, and Global Circulation
Discovering Physical Geography Third Edition by Alan Arbogast Chapter 6: Atmospheric Pressure, Wind, and Global Circulation Factors That Influence Air Pressure Air Pressure is the measured weight of air
More informationCHAPTER 6 Air-Sea Interaction
CHAPTER 6 Air-Sea Interaction What causes Earth s seasons? Tilt (23.5 ) responsible for seasons 2011 Pearson Education, Inc. Distribution of Solar Energy Distribution of Solar Energy Atmosphere absorbs
More informationFluid Circulation (Student Mastery Objectives) -The most frequent type of heat transfer of energy in the atmosphere is convection.
Fluid Circulation (Student Mastery Objectives) -The most frequent type of heat transfer of energy in the atmosphere is convection. -Differences in density affect the circulation of fluids. Cold air is
More informationEARTH, PLANETARY, & SPACE SCIENCES 15 INTRODUCTION TO OCEANOGRAPHY. LABORATORY SESSION #6 Fall Ocean Circulation
EARTH, PLANETARY, & SPACE SCIENCES 15 INTRODUCTION TO OCEANOGRAPHY LABORATORY SESSION #6 Fall 2017 Ocean Circulation The focus of the Lab this week is circulation of the ocean and atmosphere. Here, you
More informationGlobal Circulations. GEOG/ENST 2331 Lecture 15 Ahrens: Chapter 10
Global Circulations GEOG/ENST 2331 Lecture 15 Ahrens: Chapter 10 Last lecture Microscale (turbulence) Mesoscale (land/sea breeze) Synoptic scale (monsoon) Global scale (3 cell circulation) Three Cell Model
More informationIntroduction to Oceanography OCE 1001
Introduction to Oceanography OCE 1001 Lecture Notes Chantale Bégin & Jessica Fry Version 2.1 10. Ocean Circulation (Trujillo, Chapter 7) Major ocean currents are stable and predictable; they have been
More informationHui Wang, Mike Young, and Liming Zhou School of Earth and Atmospheric Sciences Georgia Institute of Technology Atlanta, Georgia
Water Cycle between Ocean and Land and Its Influence on Climate Variability over the South American-Atlantic Regions as Determined by SeaWinds Scatterometers Rong Fu Hui Wang, Mike Young, and Liming Zhou
More informationAdditive effect of two solar forcing mechanisms and influences on. tropical Pacific climate. National Center for Atmospheric Research
Additive effect of two solar forcing mechanisms and influences on tropical Pacific climate Gerald A. Meehl Julie Arblaster, Fabrizio Sassi, Katja Matthes, and Harry van Loon National Center for Atmospheric
More informationThe Role of the Wind-Evaporation-Sea Surface Temperature (WES) Feedback in Tropical Climate Variability
The Role of the Wind-Evaporation-Sea Surface Temperature (WES) Feedback in Tropical Climate Variability R. Saravanan Depart ment of At mospheric Sciences, Texas A&M University, College Station Collaborators:
More informationOcean dynamic processes responsible for the interannual. variability of the tropical Indian Ocean SST. associated with ENSO
Ocean dynamic processes responsible for the interannual variability of the tropical Indian Ocean SST associated with ENSO Jong Seong Kug 1 and Soon Il An 2, Korea Ocean Research and Development Institute
More informationSection 1. Global Wind Patterns and Weather. What Do You See? Think About It. Investigate. Learning Outcomes
Chapter 5 Winds, Oceans, Weather, and Climate Section 1 Global Wind Patterns and Weather What Do You See? Learning Outcomes In this section, you will Determine the effects of Earth s rotation and the uneven
More informationAir moves towards ITCZ in tropics because of rising air - convection. Horizontal extent of Hadley cell is modified by Friction Coriolis Force
Air moves towards ITCZ in tropics because of rising air - convection Horizontal extent of Hadley cell is modified by Friction Coriolis Force Speed from rotation Objects at rest on Earth move at very different
More informationEl Niño Unit (2.5 pts)
T. James Noyes, El Camino College El Niño Unit (Topic 9B) page 1 Name: Section: El Niño Unit (2.5 pts) El Niño is a warm ocean current that flows along the Equator and towards the west coast of South America
More informationW3 Global Circulation Systems
W3 Global Circulation Systems Which regions of Earth receive the most energy from the Sun? If not for global circulation systems There would only be two narrow regions that would support life What
More informationMechanistic links between the tropical Atlantic and the Indian monsoon in the absence of El Nino Southern Oscillation events
Mechanistic links between the tropical Atlantic and the Indian monsoon in the absence of El Nino Southern Oscillation events Vijay Pottapinjara 1*, Roxy Mathew Koll2, Raghu Murtugudde3, Girish Kumar M
More informationSea and Land Breezes METR 4433, Mesoscale Meteorology Spring 2006 (some of the material in this section came from ZMAG)
Sea and Land Breezes METR 4433, Mesoscale Meteorology Spring 2006 (some of the material in this section came from ZMAG) 1 Definitions: The sea breeze is a local, thermally direct circulation arising from
More informationEffect of Orography on Land and Ocean Surface Temperature
Present and Future of Modeling Global Environmental Change: Toward Integrated Modeling, Eds., T. Matsuno and H. Kida, pp. 427 431. by TERRAPUB, 2001. Effect of Orography on Land and Ocean Surface Temperature
More information9/25/2014. Scales of Atmospheric Motion. Scales of Atmospheric Motion. Chapter 7: Circulation of the Atmosphere
Chapter 7: Circulation of the Atmosphere The Atmosphere: An Introduction to Meteorology, 12 th Lutgens Tarbuck Lectures by: Heather Gallacher, Cleveland State University Scales of Atmospheric Motion Small-
More informationName Date L.O: SWBAT explain what breezes, planetary winds, ocean currents & monsoons are.
Name Date L.O: SWBAT explain what breezes, planetary winds, ocean currents & monsoons are. 1. A cool breeze is blowing toward the land from the ocean on a warm, cloudless summer day. This condition is
More informationZonal (East-West) Currents. Wind-Driven Ocean Currents. Zonal (East-West) Currents. Meridional (N-S) Currents
Wind-Driven Ocean Currents Similarities between winds & surface currents Zonal (East-West) Currents Trade winds push currents westward north & south of the equator Equatorial currents. Up to 100 cm/sec.
More informationMeteorology. Circle the letter that corresponds to the correct answer
Chapter 7 Worksheet 2 Meteorology Name: Circle the letter that corresponds to the correct answer 1) Which of the following factors contributes to the general subsidence in the latitude zone 20 degrees
More informationBiennial Oscillation of Tropical Ocean-Atmosphere System Associated with Indian Summer Monsoon
Biennial Oscillation of Tropical Ocean-Atmosphere System Associated with Indian Summer Monsoon 2.1 Introduction The Indian summer monsoon displays substantial interannual variability, which can have profound
More informationThe Ocean is a Geophysical Fluid Like the Atmosphere. The Physical Ocean. Yet Not Like the Atmosphere. ATS 760 Global Carbon Cycle The Physical Ocean
The Physical Ocean The Ocean is a Geophysical Fluid Like the Atmosphere Three real forces: Gravity Pressure gradients Friction Two apparent forces: Coriolis and Centrifugal Geostrophic & Hydrostatic balances
More informationThe Setting - Climatology of the Hawaiian Archipelago. Link to Video of Maui Waves
The Setting - Climatology of the Hawaiian Archipelago Link to Video of Maui Waves What caused this week s weather? What caused this weekend s weather? Today s Objective: Provide overview and description
More informationTrade winds How do they affect the tropical oceans? 10/9/13. Take away concepts and ideas. El Niño - Southern Oscillation (ENSO)
El Niño - Southern Oscillation (ENSO) Ocean-atmosphere interactions Take away concepts and ideas What is El Niño, La Niña? Trade wind and Walker circulation. What is the Southern Oscillation? Tropical
More informationWednesday, September 27, 2017 Test Monday, about half-way through grading. No D2L Assessment this week, watch for one next week
Wednesday, September 27, 2017 Test Monday, about half-way through grading No D2L Assessment this week, watch for one next week Homework 3 Climate Variability (due Monday, October 9) Quick comment on Coriolis
More informationEl Niño / Southern Oscillation (ENSO) and inter-annual climate variability
El Niño / Southern Oscillation (ENSO) and inter-annual climate variability seasonal cycle what is normal? monthly average conditions through a calendar year sea level pressure and surface winds surface
More information3. Climatic Variability. El Niño and the Southern Oscillation Madden-Julian Oscillation Equatorial waves
Georges (1998) 3. Climatic Variability El Niño and the Southern Oscillation Madden-Julian Oscillation Equatorial waves ENVIRONMENTAL CONDITIONS FOR TROPICAL CYCLONES TO FORM AND GROW Ocean surface waters
More informationGlobal Winds AOSC 200 Tim Canty
Global Winds AOSC 200 Tim Canty Class Web Site: http://www.atmos.umd.edu/~tcanty/aosc200 Topics for today: Global Wind Patterns Deserts Jet Stream Monsoons Ocean transport Ocean cycles Lecture 16 Oct 24
More informationThe General Circulation and El Niño. Dr. Christopher M. Godfrey University of North Carolina at Asheville
The General Circulation and El Niño Dr. Christopher M. Godfrey University of North Carolina at Asheville Global Circulation Model Air flow broken up into 3 cells Easterlies in the tropics (trade winds)
More informationGeophysical Fluid Dynamics of the Earth. Jeffrey B. Weiss University of Colorado, Boulder
Geophysical Fluid Dynamics of the Earth Jeffrey B. Weiss University of Colorado, Boulder The Earth is a spinning sphere Coriolis force depends on latitude solar flux depends on latitude Michael Ritter,
More informationLecture 13. Global Wind Patterns and the Oceans EOM
Lecture 13. Global Wind Patterns and the Oceans EOM Global Wind Patterns and the Oceans Drag from wind exerts a force called wind stress on the ocean surface in the direction of the wind. The currents
More informationENSO Cycle: Recent Evolution, Current Status and Predictions. Update prepared by Climate Prediction Center / NCEP 8 March 2010
ENSO Cycle: Recent Evolution, Current Status and Predictions Update prepared by Climate Prediction Center / NCEP 8 March 2010 Outline Overview Recent Evolution and Current Conditions Oceanic Niño Index
More informationAn ITCZ-like convergence zone over the Indian Ocean in boreal late autumn
Click Here for Full Article GEOPHYSICAL RESEARCH LETTERS, VOL. 34, L10811, doi:10.1029/2006gl028341, 2007 An ITCZ-like convergence zone over the Indian Ocean in boreal late autumn N. Sato, 1 K. Yoneyama,
More informationOceans and the Global Environment: Lec 2 taking physics and chemistry outdoors. the flowing, waving ocean
Oceans and the Global Environment: Lec 2 taking physics and chemistry outdoors the flowing, waving ocean Peter Rhines 1 Eric Lindahl 2 Bob Koon 2, Julie Wright 3 www.ocean.washington.edu/courses/has221a-08
More informationSummary of Lecture 10, 04 March 2008 Introduce the Hadley circulation and examine global weather patterns. Discuss jet stream dynamics jet streams
Summary of Lecture 10, 04 March 2008 Introduce the Hadley circulation and examine global weather patterns. Discuss jet stream dynamics jet streams arise because the Coriolis force prevents Hadley-type
More informationUnderstanding El Nino-Monsoon teleconnections
Understanding El Nino-Monsoon teleconnections Dr Neena Joseph Mani Earth & Climate Science INSA Anniversary General meeting, Session: Science in IISER Pune 27 th December 2017 Mean State of the equatorial
More informationLornshill Academy. Geography Department Higher Revision Physical Environments - Atmosphere
Lornshill Academy Geography Department Higher Revision Physical Environments - Atmosphere Physical Environments Atmosphere Global heat budget The earth s energy comes from solar radiation, this incoming
More informationAtmospheric Circulation
Atmospheric Circulation Why do we say Earth's temperature is moderate? It may not look like it, but various processes work to moderate Earth's temperature across the latitudes. Atmospheric circulation
More informationWater Budget I: Precipitation Inputs
Water Budget I: Precipitation Inputs Forest Cover Global Mean Annual Precipitation (MAP) Biomes and Rainfall Forests won t grow where P < 15 / yr Forest type depends strongly on rainfall quantity, type
More informationLesson: Ocean Circulation
Lesson: Ocean Circulation By Keith Meldahl Corresponding to Chapter 9: Ocean Circulation As this figure shows, there is a connection between the prevailing easterly and westerly winds (discussed in Chapter
More informationLocal Winds. Please read Ahrens Chapter 10
Local Winds Please read Ahrens Chapter 10 Scales of Motion Microscale: meters Turbulent eddies Formed by mechanical disturbance or convection Lifetimes of minutes Mesoscale: km s to 100 s of km s Local
More informationEnvs, Geol, Phys 112: Global Climate. Energy-Atmosphere System Review Aguado & Bert, Ch. 1, 2, 3, 4, 5, 6, 9, 10
Exam 1 Review Energy-Atmosphere System Review Aguado & Bert, Ch. 1, 2, 3, 4, 5, 6, 9, 10 Location on Earth (L04) Latitude & Longitude great circles, prime meridian, time zones, cardinal points, azimuth
More informationAtmospheric & Ocean Circulation- I
Atmospheric & Ocean Circulation- I First: need to understand basic Earth s Energy Balance 1) Incoming radiation 2) Albedo (reflectivity) 3) Blackbody Radiation Atm/ Ocean movement ultimately derives from
More informationMonitoring and prediction of El Niño and La Niña
Monitoring and prediction of El Niño and La Niña Akio NARUI El Niño Monitoring and Prediction Group Climate Prediction Division Japan Meteorological Agency Outline 1. Introduction of El Niño and La Niña
More informationLocal vs. Remote SST Forcing in Shaping the Asian-Australian Monsoon Variability
Local vs. Remote SST Forcing in Shaping the Asian-Australian Monsoon Variability Tim Li IPRC and Dept. of Meteorology, Univ. of Hawaii Acknowledgement. B. Wang, C.-P. Chang, P. Liu, X. Fu, Y. Zhang, Kug
More informationRecent Atmospheric and Oceanic Circulation Changes Affecting Winter Weather in North America. Dr. Art Douglas Professor Emeritus Creighton University
Recent Atmospheric and Oceanic Circulation Changes Affecting Winter Weather in North America Dr. Art Douglas Professor Emeritus Creighton University Outline 1. The 2018 El Nino: A Northern Hemisphere induced
More informationAnalysis of 2012 Indian Ocean Dipole Behavior
Analysis of 2012 Indian Ocean Dipole Behavior Mo Lan National University of Singapore Supervisor: Tomoki TOZUKA Department of Earth and Planetary Science, University of Tokyo Abstract The Indian Ocean
More informationSIO20 - Midterm Examination 2 v1 Winter Section A. Circle the letter corresponding to the best answer. (1 point each)
NAME: Section A. Circle the letter corresponding to the best answer. (1 point each) 1. Rainbows result from: a. refraction and reflection of sunlight by water droplets b. reflection of sunlight by oceans
More informationRole of the oceans in the climate system
Role of the oceans in the climate system heat exchange and transport hydrological cycle and air-sea exchange of moisture wind, currents, and upwelling gas exchange and carbon cycle Heat transport Two Primary
More informationGEOS 201 Lab 13 Climate of Change InTeGrate Module Case studies 2.2 & 3.1
Discerning Patterns: Does the North Atlantic oscillate? Climate variability, or short term climate change, can wreak havoc around the world. Dramatic year to year shifts in weather can have unanticipated
More informationAtmospheric Circulation (Ch. 8) Ocean & Atmosphere are intertwined Gases & waters freely exchanged Wind Weather Climate
Atmospheric Circulation (Ch. 8) Ocean & Atmosphere are intertwined Gases & waters freely exchanged Wind Weather Climate Atmospheric Structure Consists of Layers Separated by Temperature Stratosphere: Temperature
More informationOCEANOGRAPHY 101. Map, and temperature, salinity & density profiles of the water column at X, near mouth of the Columbia River.
OCEANOGRAPHY 101 EXAM 2 WINTER 00 NAME STUDENT NUMBER 1 Map, and temperature, salinity & density profiles of the water column at X, near mouth of the Columbia River. P a c i f i c O c e a n X WA Columbia
More informationAir Pressure and Wind
Air Pressure and Wind 19.1 Understanding Air Pressure Air Pressure Defined Air pressure is the pressure exerted by the weight of air. Air pressure is exerted in all directions down, up, and sideways. The
More informationLecture 33. Indian Ocean Dipole: part 2
Lecture 33 Indian Ocean Dipole: part 2 Understanding the processes I continue the discussion of the present understanding of the processes involved in the evolution of the mean monthly SST, and convection
More informationPrevailing Winds. The Coriolis Effect
Prevailing Winds 1. Wind: a movement of air in the atmosphere. Bill Nye wind (2 minutes) 2. Local or regional wind: occur in fairly small areas. 3. Prevailing winds: Major wind pattern that affect large
More informationSIO 210 Problem Set 3 November 4, 2011 Due Nov. 14, 2011
SIO 210 Problem Set 3 November 4, 2011 Due Nov. 14, 2011 1. At 20 N, both the ocean and the atmosphere carry approximately 2 PW of heat poleward, for a total of about 4 PW (see figure). If (at this latitude)
More informationGoals for today: continuing Ch 8: Atmospheric Circulation and Pressure Distributions. 26 Oct., 2011
Goals for today: 26 Oct., 2011 continuing Ch 8: Atmospheric Circulation and Pressure Distributions Examples of synoptic scale and mesoscale circulation systems that are driven by geographic diversity in
More informationMonday, October 2, Watch for new assessment (Week 4/5 review) TA s have your tests, please see key (at course website)
Monday, October 2, 2017 Watch for new assessment (Week 4/5 review) TA s have your tests, please see key (at course website) Homework 3 Due date Wednesday, Oct 11 (8 pm) Be ready to watch another important
More informationMidterm Exam III November 25, 2:10
Midterm Exam III November 25, 2:10 25, 2:10 3:25 pm, HW714 Chapters 7 (7.12 7.17), 8 and 9 (through section 9.15, included) 60 multiple choice questions this exam constitutes 22% (only) of your total (overall)
More informationOCN 201, Chemistry & Physics Section
, A 1-April-2015 Name: Answer the True/False and Multiple Choice questions on the scantron sheet. Answer the remaining questions on this exam handout. Turn in both the scantron and exam at the end of class.
More informationWrite about this. Have you ever experienced a very strong wind gust? What happened? Have you ever felt a gentle breeze? What did it feel like?
Write about this. Have you ever experienced a very strong wind gust? What happened? Have you ever felt a gentle breeze? What did it feel like? How wind works Winds flow on earth based on differences in
More informationChapter 22, Section 1 - Ocean Currents. Section Objectives
Chapter 22, Section 1 - Ocean Currents Section Objectives Intro Surface Currents Factors Affecting Ocean Currents Global Wind Belts (you should draw and label a diagram of the global wind belts) The Coriolis
More informationLecture 13 March 24, 2010, Wednesday. Atmospheric Pressure & Wind: Part 4
Lecture 13 March 24, 2010, Wednesday Atmospheric Pressure & Wind: Part 4 Synoptic scale winds Mesoscale winds Microscale winds Air-sea interactions The largest synoptic scale wind. Monsoon: Arabic for
More information